Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 291258
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
451 AM PST THU JAN 29 2015

*** AIR DISPERSION CATEGORIES:   GOOD, FAIR, POOR ***

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 3-6 MPH.          N 2-6 MPH.
TRANSPORT WINDS               N 3-6 MPH.          NW 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JAN 30        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          47 (POOR).
OUTLOOK FOR FRI JAN 30        40 (POOR).

FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 2-4 MPH.         NE 2-5 MPH.
TRANSPORT WINDS               NW 2-4 MPH.         N 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JAN 30        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          47 (POOR).
OUTLOOK FOR FRI JAN 30        30 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-5 MPH.          S 5-10 MPH.
TRANSPORT WINDS               S 2-5 MPH.          S 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JAN 30        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          127 (POOR).
OUTLOOK FOR FRI JAN 30        41 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       25 (POOR)
ELLENSBURG     34 (POOR)
GOLDENDALE     46 (POOR)
TRI-CITIES     58 (POOR)
WALLA WALLA    29 (POOR)
YAKIMA         40 (POOR)
BEND           25 (POOR)
PRINEVILLE     30 (POOR)
ENTERPRISE     41 (POOR)
HERMISTON      60 (POOR)
JOHN DAY       81 (POOR)
LA GRANDE     142 (POOR)
MADRAS         35 (POOR)
MEACHAM        46 (POOR)
PENDLETON      37 (POOR)
REDMOND        25 (POOR)
SENECA         59 (POOR)
THE DALLES     47 (POOR)

METEOROLOGICAL INFORMATION PROVIDED IN THIS PRODUCT REPRESENTS ONLY
SOME OF THE FACTORS USED IN BURN DECISIONS.  BURN DECISIONS ARE
OUTSIDE THE PURVIEW OF THE NATIONAL WEATHER SERVICE.

THE VENTILATION INDEX IS A TOOL TO ASSIST SMOKE MANAGEMENT
AGENCIES IN DETERMINING BURN OR NO BURN DECISIONS.  A VENTILATION
INDEX GRAPHIC IS ON THE PENDLETON WEBSITE AT THE FOLLOWING ADDRESS:
HTTP://WWW.WRH.NOAA.GOV/PDT/FORECAST/FWXGRAPHICALVENTILATION.PHP?WFO=PDT

IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.
$$









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